can i safely supercharge after upgrade?

98GtPower · 04-10-2003, 03:05 PM

If i upgrade my 98 GT to the Gt head of the 99+ can i still supercharge my engine (8-10 psi) safely, or will i mess up my engine?

Hammer · 04-10-2003, 04:53 PM

I do believe the head swap will leave you with a higher compression ratio. I'm not sure of the exact #s, but it could be prohibitive to forced induction....

blue00gt · 04-10-2003, 04:53 PM

You will need to change your pistons to drop the compression ratio before supercharging after you put the heads on (putting the heads on your stock shortblock raises the compression).

Hammer · 04-10-2003, 04:54 PM

Another option:
Port the stock heads and put on a roots type blower to replace the crappy intake....

98GtPower · 04-10-2003, 07:03 PM

will it be harder for them to install new pistons if they are already ripping it apart to put in new heads and cams?

Badass_yellowGT · 04-10-2003, 08:16 PM

actually if youy plan on sc your engine after pi swap it wil save time and money to do it while having the heads done it will save alot on labor and parts and the comp with the swap is 10.7:1

98GtPower · 04-11-2003, 08:21 PM

So what pistons should I get? What kind of price am i looking at?

Badass_yellowGT · 04-12-2003, 04:22 PM

Pistons will run you between 500-650.00 plus labor . peobe and modmax have excellent pistons but i plan on going with probe myself and better connecting rods.

04-10-2003, 03:05 PM	#1
98GtPower Registered Member Join Date: Aug 2002 Location: OXNARD!!! California Posts: 36	can i safely supercharge after upgrade? If i upgrade my 98 GT to the Gt head of the 99+ can i still supercharge my engine (8-10 psi) safely, or will i mess up my engine? __________________ 98 Mustang GT- American Thunder Flowmaster exhaust, upper and lower control arms, turn downs, Saleen style body kit, Cobra R Hood, 17" Cobra Imitation Chrome Polished Rims.

04-10-2003, 04:53 PM	#2
Hammer AKA "Dr. Evil" Join Date: Feb 1999 Location: South Fork Ranch Posts: 1,721	I do believe the head swap will leave you with a higher compression ratio. I'm not sure of the exact #s, but it could be prohibitive to forced induction.... __________________ Uncle Sam "What the hell is up with all the gauges? Calling Captain Kirk, your ride awaits... Phasers on stun...."

04-10-2003, 04:53 PM	#3
blue00gt Mustang Addict Join Date: Jan 2001 Location: McKinney, TX Posts: 1,294	You will need to change your pistons to drop the compression ratio before supercharging after you put the heads on (putting the heads on your stock shortblock raises the compression). __________________ Strike down the unroadworthy! 2000 GT Atl. Blue: '03 Cobra motor - 465rwhp/473rwtq, T-56 6-speed, full MM TA/PH & tubular K-member suspension, Saleen body, 17" Torq-Thrust II's, M/T ET Street radials, and lots more '94 Rio Red Cobra: All the bolt-ons, 3.73s

04-10-2003, 04:54 PM	#4
Hammer AKA "Dr. Evil" Join Date: Feb 1999 Location: South Fork Ranch Posts: 1,721	Another option: Port the stock heads and put on a roots type blower to replace the crappy intake.... __________________ Uncle Sam "What the hell is up with all the gauges? Calling Captain Kirk, your ride awaits... Phasers on stun...."

04-10-2003, 07:03 PM	#5
98GtPower Registered Member Join Date: Aug 2002 Location: OXNARD!!! California Posts: 36	will it be harder for them to install new pistons if they are already ripping it apart to put in new heads and cams? __________________ 98 Mustang GT- American Thunder Flowmaster exhaust, upper and lower control arms, turn downs, Saleen style body kit, Cobra R Hood, 17" Cobra Imitation Chrome Polished Rims.

04-10-2003, 08:16 PM	#6
Badass_yellowGT Registered Member Join Date: Jun 2002 Location: Western,MA Posts: 254	actually if youy plan on sc your engine after pi swap it wil save time and money to do it while having the heads done it will save alot on labor and parts and the comp with the swap is 10.7:1

04-11-2003, 08:21 PM	#7
98GtPower Registered Member Join Date: Aug 2002 Location: OXNARD!!! California Posts: 36	So what pistons should I get? What kind of price am i looking at? __________________ 98 Mustang GT- American Thunder Flowmaster exhaust, upper and lower control arms, turn downs, Saleen style body kit, Cobra R Hood, 17" Cobra Imitation Chrome Polished Rims.

04-12-2003, 04:22 PM	#8
Badass_yellowGT Registered Member Join Date: Jun 2002 Location: Western,MA Posts: 254	Pistons will run you between 500-650.00 plus labor . peobe and modmax have excellent pistons but i plan on going with probe myself and better connecting rods. __________________ Rice Haters Club Member #55 For My car Specs Click the Home page link http://www.badassyellowgt.50g.com/

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